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LIVOLTEK GF1-3K24S1 User Manual
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LIVOLTEK GF1-3K24S1 User Manual

Off-grid inverter
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USER MANUAL
Off-Grid Inverter
(GF1-3K24S1)
Copyright Declaration
The copyright of this manual belongs to Hangzhou Livoltek Power Co., Ltd. Any corporation or
individual should not plagiarize, partially or fully copy (including software, etc.), and no
reproduction or distribution of it in any form or by any means. All rights reserved. Hangzhou
Livoltek Power Co.,Ltd. reserves the right of final interpretation.
GF13k24- 23-V1-2308

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Summary of Contents for LIVOLTEK GF1-3K24S1

  • Page 1 (GF1-3K24S1) Copyright Declaration The copyright of this manual belongs to Hangzhou Livoltek Power Co., Ltd. Any corporation or individual should not plagiarize, partially or fully copy (including software, etc.), and no reproduction or distribution of it in any form or by any means. All rights reserved. Hangzhou Livoltek Power Co.,Ltd.
  • Page 3 Table of Contents About This Manual ................3 Scope ....................3 Target Group ..................3 Levels of warning messages ..............3 How to use this manual ............... 3 Safety....................4 Safety Instructions ................. 4 Personnel Safety ................... 4 Inverter Protection ................4 Battery Protection .................
  • Page 4 6.2 AC Connection ..................24 6.3 Battery Connection ................... 28 6.4 External LCD Display (Optional) ............... 32 6.5 Installation Verification ................33 7. System Operation ................33 7.1Powering ON the Inverter ................33 7.2 Powering OFF the Inverter ................ 34 7.3 LEDs Display ....................
  • Page 5 The user manual mainly describes the product information, safety and installation guidelines as well as information on wiring and troubleshooting of the unit. This manual is valid for GF1-3K24S1. 1.2 Target Group This manual is intended for qualified personnel who are responsible for the installation and commissioning of the inverter.
  • Page 6 The safety instructions in this manual cannot cover all the precautions that should be followed. Perform operations considering actual onsite conditions. LIVOLTEK shall not be held liable for any damage caused by violation • of the safety instructions in this manual.
  • Page 7 • Do not touch any hot parts during operation. • As soon as receiving the inverter please check if it is damaged during its transportation. If yes, please contact your dealer immediately. • Only qualified personnel can change the country settings. Adequate ventilation must be provided for inverter installation location •...
  • Page 8 2.5 Symbol on the Type Label Symbol Explanation CE mark. The inverter complies with the requirements of the applicable CE guild lines Beware of hot surface. The inverter can become hot during operation. Avoid contact during operation. Danger of high voltages. Danger to life due to high voltages in the inverter! Danger.
  • Page 9 Scope of Delivery K(optional) Item Designation Inverter Expansion Screws for Fixing Mounting Bracket and fix inverter Spare FUSE in case of reversal connection of battery NTC cable Terminal block for battery cables Terminal block for AC cables User Manual...
  • Page 10 A pair of Positive & Negative PV Plugs Tape for NTC cable Certificate card LCD Display kits (optional) Note: Delivery marked with“ (optional)”, which need to be purchased additionally, please contact your local dealer for details respectively.
  • Page 11 Product Introduction LIVOLTEK GF Series off-grid inverter is an important part of the off-grid solar power supply system, integrated with the MPPT solar charger and battery charger to offer uninterruptible power supply, which is ideal for off-grid backup power and self-consumption applications.
  • Page 12 4.2 Appearance View of the GF1 Series off-grid inverter Position Designation LED indicators: Indicates the current working state of the inverter. Type Label: The type label uniquely identifies the inverter. You will find the following information on the type label: •...
  • Page 13 4.3 Interfaces Wi-Fi indicator light Reboot function key for Wi-Fi module Split LCD screen communication port USB port for upgrading NTC connection port for Lead-acid battery Dry contact BMS communication port EPS output switch on/off PV strings connection AC input/output ports Battery connection ports Port for connection of a permanent grounded wiring system...
  • Page 14 4.4 Dimensions...
  • Page 15 4.5 System Diagram Solar Power and AC Power available: Solar Power and AC Power not available:...
  • Page 16 4.6 Working Modes LIVOLTEK GF Series off-grid inverters is for autonomous solar energy generation, and incorporate batteries and generators to maintain a constant supply of electricity to your home, shack or farm. With the intelligent AC and PV complementation power supply function, the unit can switch in auto between different power sources to offer uninterruptible power support.
  • Page 17 4.6.2 Backup Mode This mode allows you to dedicate the full capacity of the battery for backup power supply during utility grid failure, while avoiding overcharging and discharging the battery and extending its life. If you never know when the grid outage might be, it makes perfect sense to prioritize keeping the battery full.
  • Page 18 When the solar energy is insufficient or there is no sunlight, the battery • will discharge for loads consumption until reaches its power limit value. Then Utility will provide power to the loads. • Power source Priority is Solar > Battery > Utility •...
  • Page 19 5. Mechanical Mounting 5.1 Requirements for Mounting Make sure there is no electrical connection before installation. • • In order to avoid electric shock or other injury, make sure that holes will not be drilled over any electricity or plumbing installations. Always follow the instructions when moving and positioning the inverter.
  • Page 20 • Not in the cool air directly. Not near the television antenna or antenna cable. • • Not higher than altitude of about 2000m above sea level. Not in environment of precipitation or humidity (＞95%). • • Under good ventilation condition. •...
  • Page 21 Never install the inverter horizontally, or with a forward tilt or with a backward tilt or even with upside down. The horizontal installation can result in damage to the inverter. Install the inverter upright or at a maximum back tilt of 15 degrees to facilitate heat dissipation.
  • Page 22 Step2: Drill holes on the wall • Insert the expansion tubes into the holes and lighten them. Then install the inverter by screwing the screws. Step3: Installation Self-check Make sure the inverter is well fixed.
  • Page 23 6. Electrical Connection This chapter mainly describes the cable connections of the system. Prior to any electrical connections, keep in mind that the inverter has dual power supplies. It is mandatory for the qualified personnel to wear personal protective equipment (PPE) during the electrical work. Danger to life due to a high voltage inside the inverter! •...
  • Page 24 The voltage, current and power ratings of the panels to be connected are within the allowable range of the inverter. Ensure polarity is correct. Please refer to the Technical Data in chapter 9 for voltage and current limits. • Since the inverter is transformer less, please do not ground either output of the PV panels.
  • Page 25 Step2: Connect the red wire to the positive metal terminal, and the black to the negative and crimp them using a crimping tool. Step3: Insert the crimped positive and negative power cables into the corresponding connectors until a “click” sound is heard. Step4: Tighten the locking nuts on the positive and negative connectors.
  • Page 26 Suggested cable requirement for AC wires • The grid voltage and frequency must be in the permissible range. An external AC breaker (≥25A@GF1-3K24S1) must be installed • between inverter and AC input power source. This will ensure the inverter can be securely disconnected during maintenance and fully protected from over current of AC input.
  • Page 27 Procedure: Step1: Assembling the AC Input and EPS Connectors • Remove the cable jacket and strip the wire insulation by 5–7 mm. Insert the conductors to the corresponding terminal and crimp them. • • Pull cables outward to check whether they are firmly installed. Step 2: Installing the Connectors Pull out the terminal protective cover diagonally upwards.
  • Page 28 • Make sure the wires are securely connected and slide the catch of the cover downwards to fix on. Declarations For the EPS Function: The EPS output of GF inverters have over load ability. For details, please refer to the technical parameters of GF series inverter section. And the inverter has self-protection derating at high ambient temperature.
  • Page 29 • Do not connect the loads which may in total exceed the maximum back- up capacity. • Try to avoid those loads which may create very high start-up current surges such as inverter air-conditioner, high-power pump etc. • Due to the condition of the battery itself, battery current might be limited by some factors including but not limited to the temperature, weather etc.
  • Page 30 6.3 Battery Connection Please be careful of any electric shock or chemical hazards. DC breaker (≥150A) Make sure there is an external connected to the battery without build-in DC breaker. DANGER • Be careful against any electric shock or chemical hazard. •...
  • Page 31 6.3.1 Wiring Procedure 1. Remove insulation sleeve 12-16 mm for positive and negative conductors. 2. Insert the exposed areas of the positive and negative power cables into the metal terminals of the positive and negative connectors respectively and crimp them using a crimping tool.
  • Page 32 5. Make sure polarity at both the battery and the inverter/charge is correctly connected and conductors are tightly screwed into the battery terminals. Then, rotate the screws of protective covers clockwise and tighten them to fix on. Installation must be performed with care due to high battery voltage in •...
  • Page 33 • Do not apply anti-oxidant substance on the terminals before terminals are connected tightly. • Before making final connection closing breaker/disconnection, be sure positive (+) must be connected to positive (+) and negative (-) must be connected to negative (-). 6.3.2 NTC Communication for Lead-acid battery The inverter has integrated a NTC temperature sampling port for lead-acid batteries.
  • Page 34 6.4 External LCD Display (Optional) LCD Display indicates the operating status and input/output power the information of the inverter. You can also set the parameters on it. Please follow user manual of LCD Display panel for the detailed wire connection. LCD display connection diagram: Wiring Connection Procedure：...
  • Page 35 6.5 Installation Verification Check the following items after the inverter is installed. • No other objects put on the inverter. • All screws especially the screws used for electrical connections are tightened. • The inverter is installed correctly and securely. •...
  • Page 36 7.2 Powering OFF the Inverter Step1: Turn off the loads; Step 2: Turn off the PV; Step 3: Turn off battery (For Lithium battery, switch off the battery firstly, then disconnect the isolator.) Step 4: Turn off the AC switch; Step 5: Wait for at least 5 minutes after the LED and graphical display black out for the internal circuits to discharges energy;...
  • Page 37 For more details, refer to Table LED indicator status below. FAUL Error Message GRID LOAD BATTERY GRID LOAD SYSTEM ★ ★ Starting up Normal status ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ● WI-FI ◎ ◎ ◎ ◎ ◎ ◎...
  • Page 38 8. APP Operation ‘My Livoltek' APP is a platform to communicate with your device via Wi-Fi or Bluetooth, you can login on LIVOLTEK web portal(link as below) on your computer, also you can scan the QR code (as below) to download the APP on your phone to achieve real-time display and remote control.
  • Page 39 8.1 User interface on the APP Notes: The advanced setting and Maintenance settings can only be checked and set via local mode on the APP or the web platform of installers and distributors’ accounts.
  • Page 40 ❶ Click on ‘Local Mode’. • Open the ‘My Livoltek’ APP ❷ Click on ‘Bluetooth Mode’. ❸ Find your inverter according to device’s SN number ("BLF-GF- xxxx* "), which is the few tail numbers of SN on the label.
  • Page 41 Notice: Local real-time monitoring via Bluetooth. 8.3 Register an account Open the ‘My Livoltek’ APP or LIVOLTEK Web Platform (the link shown above at ‘8.APP operation’) and login with the username & password. Register it first if you don’t have an account, which provides access to the remote monitoring and...
  • Page 42 ❷ Choose your ‘Server’ according to your country and region. ❸ Choose ‘Account Type’. For end-users, please tap to create an account, if you are distributors/installers, go to browse livoltek-portal web platform to ❹ Fill in your personal details in the registration form (end-user).
  • Page 43 8.4 Create a site. You can edit the site (PV Plant) information, add the new inverter to the site, delete the site, expand the list of added inverters of the site and set time-of-use tariff of your site. 8.4.1 Add the first Site and device For the first login, there is the guidance to create the first site.
  • Page 44 8.4.2 Add Another Site • Open the app and login with the username & password. • Enter the "Site" Page, touch "Add" button [ ] at the top right of the page. • Choose the Installer, enter the Plant Name, Time Zone, location and other basic information.
  • Page 45 Notes: Tick "I agree installers to access to this site ", then your installer can assist you to set the inverter remotely. The subsequent steps are the same as the previous ‘8.4.1Add the first Site and device’. Notes: The time frame must be 24-hour electricity tariffs. 8.4.3 Add Device •Touch "Add"...
  • Page 46 8.5 Settings on the APP 8.5.1 Home Page Overview You can check Parameters of System. The status and data on this page might be a few minutes delay from the real-time and history inverter data. By touch the icons on the diagram, it will show the historical data of each inverter. This screen is the homepage after user logging in.
  • Page 47 The date and time of device is synchronized with phone by default. It can also be set by yourself. • Battery Type( Basic Settings＞ Battery Type) You would select battery Type here, and the lithium brand must have been compatible with Livoltek.
  • Page 48 • Work mode( Basic Settings＞ Work mode) There are two modes provided for you to choose: Back up, Economic. When the grid failure appears, it will switch into Off-grid mode automatically. 8.5.2.1 Emergency Charge •Emergency Charge is design to avoid the damage caused by long time excessive discharge.
  • Page 49 8.5.2.2 Select Battery type and Work Modes In the battery type, you can choose proper capacity lead acid battery with a nominal voltage at 48V. And you need to choose battery type as “Lead-acid”. If you choose lithium battery, you are allowed to use the lithium battery only which we have configured.
  • Page 50 8.5.3 Advanced Settings Advanced settings are generally customization for lead-acid battery and protection value of grid. All the settings must be 100% honest to the battery specifications first. Note: *This function interface is only exposed to the installers and distributors’ accounts.
  • Page 51 9. LCD Operation The LCD display information will be switched in turns by pressing “UP” or “DOWN” key. Object Name Description Display inverter information on the LCD Screen display. ESC button: Return from the current interface or function. Up button: Move the cursor to the upper part or increase the Function Down button: Move the cursor down or...
  • Page 52 ➣ Menu The menu is another interface for users to change settings or obtain information. - When the LCD displays the main interface, click "OK" to enter this interface. - The user can select up and down the menu, and Menu press the "OK"...
  • Page 53 AC output AC output Users can view the voltage/current/power/output by the grid here. Voltage: 0.0V Current: 0.0A Power: 0.0W Fault Users can view the recent 7errors reported by the Fault inverter here. EPS Over Load Inter Temp High EPS Over Load EPS Volt Fault AC Freq Fault Inter Temp High...
  • Page 54 Error logs Error logs Users can see the most recent seven error logs. EPS Volt Fault AC Freq Fault ➣ Setting Users can set the inverter time, application Setting language, power parameters and historical data cleaning here. Date time Languages Basic Advanced setting History clear...
  • Page 55 Work mode Users can set the working mode of the inverter here. Where the economy mode is selected, the reserved reserve energy can be set up to the end of the battery discharge to facilitate the use when the power is cut off. (For the work mode of the inverter can refer to the second chapter work mode selection) Economic Mode Work Mode...
  • Page 56 ➣ Advanced setting Advanced setting Users can enter the advanced settings to set the range of grid input voltage, output power to grid Input voltage range voltage, output power to grid frequency, lead-acid Output voltage battery parameter settings, advanced settings Output frequency password change, inverter factory reset, inverter's Lead-acid...
  • Page 57 acid character and lifetime, it need to set 3 stages during charging, which can increase its charging efficiency. In stage 1, it will be charged with constant current till the voltage rises to charge absorption volt to enter stage 2. In stage 2, it can be charged more efficiently with constant voltage till charge current is more than 300W.
  • Page 58 Change password Change password Users can change the password here, (used by the installer, not allowed to change at will) Restore User can set inverter restoration here. Restore Update select Users can set up the inverter and battery firmware upgrade by inserting the U disk here.
  • Page 59 10. Troubleshooting This chapter is a guide for troubleshooting problems of GF series inverters. When the inverter has an exception, its basic common warning and exception handling methods are shown in the table below. Explanation/Possible Error Message Suggestion causes Check if voltage and number of PV PV input voltage is not PV over Volt modules are meet requirements and...
  • Page 60 working well, or if input voltage range setting is correct. (UPS->appliance) 1. Wait for a while to check if it can BUS Voltage (AC Side) is too Inter CKT Fault automatically recover to the normal high. operating status after the fault is Over current fault detected Inter CKT Fault rectified.
  • Page 61 BMS Communication lost. 3. Reconnect the BMS cable, If the problem remains, please contact your dealer for technical support. 1.Check if the firmware version is Software version Firmware Fault correct from LCD or Livoltek-portal. incompatibility 2. Restart inverter, If the problem...
  • Page 62 remains, please contact your dealer for technical support. 1.Re-charge battery. The battery voltage is too 2. If the problem remains, please Low battery low. contact your dealer for technical support. Over current occurs during Inter CKT Fault battery charging or discharging.
  • Page 63 11. Technical Data Model GF1-3K24S1 PV Input 3600 Recommended max. PV power (Wp) Max. Open Circuit Voltage (V) MPP Range Voltage (V) 90~480 Max. PV Current (A) Max. Short Circuit Current (A) No. of MPPTs/Strings per MPPT AC Input Input Voltage Waveform...
  • Page 64 Max. Efficiency(PV to AC ) Max. Efficiency(BAT to AC ) THDv (@linear load) <3% Battery & Charger Battery Type Lead-acid Rated Battery Voltage(V) Charging Algorithm 3-Step Communication with BMS Solar Charger Type MPPT Max. Solar Charging Current (A) Max. AC Charging Current (A) Max.
  • Page 65 . Inverter is changed, updated or disassembled on hardware or software without authority from Livoltek. . Obtain the communication protocol from other illegal channels. . Build monitoring, control system without authority from Livoltek. . Livoltek will keep right to explain all the contents in this user manual.
  • Page 67 Warranty Card Registration Dear customer, thank you for choosing LIVOLTEK product. For registering product warranty, please prepare everything ready and register on https://livoltek.com/service/warranty/#warranty-activation Product Information Product Type Product S/N Installation date Installation Company Personal Information Your name Your contact number...
  • Page 68 Contacts Hangzhou LIVOLTEK Power Co., Ltd Address: 1418-35 Moganshan Road, Hangzhou, 310011, China Tel: +86-571-28330320 Fax: +86-571-28020357 Email: info@livoltek.com Web：www.livoltek.com...
  • Page 70 1418-35 Moganshan Road, Hangzhou, 310011, China info@livoltek.com www.livoltek.com...